A doughnut or donut (/ˈdoʊnət/ or /ˈdoʊnʌt/; see spelling differences) is a type of fried dough confectionery or dessert food. The doughnut is popular in many countries and prepared in various forms as a sweet snack that can be homemade or purchased in bakeries, supermarkets, food stalls, and franchised specialty outlets. Doughnuts are usually deep-fried from a flour dough, and typically either ring-shaped or without a hole, and often filled.
The two most common types are the ring doughnut and the filled doughnut—which is injected with fruit preserves, cream, custard, or other sweet fillings. A small spherical piece of dough may be cooked as a doughnut hole. Once doughnuts have been fried, they may be glazed with a sugar icing, spread with icing or chocolate, or topped with powdered sugar or sprinkles